Spring assembly



April 12, 1932. R. c. WINDERS ,2

SPRING ASSEMBLY Filed July 27, 1931 ATTORNEY$ Patented Apr. 12, 1932 UNITED STATES ROBERT (7. mm, 0] LOS AHGELES, CALIFORNIA srnme Assmmr Application filed m 21, 1981. Serial No. 553,270.

This invention relates to a spring assembly suitable for use in cushions, mattresses and like places. It comprises a group of coiled springs tied together. It is desirable that such assemblies be light in weight, the springs grouped close together and that a minimum of the covering enveloping the springs beunsupported. Furthermore, the springs should be securely fastened together and the whole assembly be capable of being rolled. Due to the weaving of the sprin s the. ties must enable relative movement 0 the springs to accommodate themselves to'difi'erences in distortion. Unless tying, enabling such movement is efiected, the assembly does not have softness. If the springsare tied to allow themselves to move for accommodation of one another, noise may result in use of the springs. My invention contemplates a noise dampening tie.

The objects of this invention are to provide a spring assembl having the advantages descrlbed above an including. economy of structure and ease of assembly of the elements.

These objects togetherwith other objects and corresponding accomplishments are obtained by means of the embodiment of my invention illustrated in the accompanying drawings, in which Fig. 1 is a plan view showing a fragment of a spring assembly at a corner; Fig. 2 is a section as seen on the line 2+2 of Fig. 1; Fig. 3 is a detail section as seen on the line 3-3 of Fig. 1; and Fig. 4 is a section as seen on the line 4-4 of Fig. 3.

Referring with more particularity to the drawings, the assembly comprises a plurality of coiled springs 5, the end portion being enlarged in spiral form. The ends, of the wire forming the coils are fastened to adjacent convolutions by twisting the ends around the convolutions as indicated by 5a. This is a common type of construction for coiled springs used in cushions and mattresses. The springs 5 are arranged in rows and the rows are parallel to one another and may be spaced a suitable distance apart. The springs in a row are contiguous to one another and the end coils are overlapped so that one lies above the other as indicated by 5b and 5c.

Extending transversely across the rows are he w res 6 having locks for adjacent springs provided by forming loops 7 in the wires. These loops comprise crowns 7a and legs 76. Sockets are formed in the legs by bending the loops back upon themselves. The sockets are narrow so that the end coils disposed therein lie in tiers and can have no lateral displacement. The wires 6 underlie the inner sides of the end coils with the loops 7 passing up and over the overlapping coils. Thus, the 0011s are held against 'la-teral displacement and yet a movement of one spring in relation to the other is permitted, that is, rotary and hmgedmovement.

Extending along the rows are cords 8. These cords may be of any suitable pliant material, such as fibre. The cords are strung through the eyes formed between the end coils and the crowns of the loops and form keepers to prevent the end coils from becommg displaced. They are fastened at their ends to the crowns of loops as indicated by 8a. The cords fill the eyes and act to dampen noise at the locks. Being flexible, they permit the spring assembly to be rolled in the direction of the cords. They also extend across the middle of the spring coil and are disposed so that the covering will not sag into the bores of the spring.

The assembly is easily put together. The loniks are positive and the structure economica What I claim is 1. A spring assembly including a plurality of coiled springs arranged in spaced parallel rows, contiguous springs in arow having their terminal coils overlapping, tie wires extending transversely of said rows and locked thereto by means of loops laterally offset from said tie wires, which loops extend through the terminal coil of one spring, over the overlapping intersections of said terminal coils and downwardly through the terminal coil of the second spring and underhanging said overlapping intersections, keeper ties of cord ranging lengthwise of said rows underlying said terminal coils and rove through the eyes formed by said loops and terminal coils, said keeper ties being fastened at their ends to the endmost tie wires.

2. A s ring assembly including a lurality of coile springs arranged in space parallel rows, contiguous springs in a row having their terminal coils overlapping, tie wires extendin transversely of sa1d rows having locks em racing overlap ing coils, said locks comprising loops latera ly offset from said wire with the legs of a 100 curved to form pockets, said loops exten in through the terminal coil of one spring an over the overlap ing intersections of said terminal coils an downwardly through the terminal coil of the second 5 ring with the overlapping intersections lying in said pockets and the.

crowns of loops underhanging said overlapped intersections, keeper ties of cord ranging lengthwise of said rowsunderlying sald terminal coils and rove through the eyes formed by said loops and terminal, coils, said keeper ties being fastened at their ends to the endmost tie wires.

In witness that I claim the foregoing I have hereunto subscribed my name this 22 day of July, 1931. Y

ROBERT C. WINDERS. 

